/*
 * Copyright (c) 2020 - Adjacent Link LLC, Bridgewater, New Jersey
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 * * Neither the name of Adjacent Link LLC nor the names of its
 *   contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

namespace EMANE
{
  namespace Utils
  {
    class FunctionWrapper::ImplementaionBase
    {
    public:
      virtual void invoke() = 0;
      virtual ~ImplementaionBase(){};
    };

    template<typename Function>
    class ImplementaionType: public FunctionWrapper::ImplementaionBase
    {
    public:
      ImplementaionType(Function && fn):
        fn_{std::move(fn)}{}

      void invoke() override
      {
        fn_();
      }
    private:
      Function fn_;
    };

    template<typename Function>
    FunctionWrapper::FunctionWrapper(Function && fn):
      pImpl_{new ImplementaionType<Function>{std::move(fn)}}{}
  }
}

inline
EMANE::Utils::FunctionWrapper::FunctionWrapper(FunctionWrapper && rhs):
  pImpl_{std::move(rhs.pImpl_)}{}

inline
EMANE::Utils::FunctionWrapper &
EMANE::Utils::FunctionWrapper::FunctionWrapper::operator=(FunctionWrapper && rhs)
{
  pImpl_=std::move(rhs.pImpl_);
  return *this;
}

inline
void EMANE::Utils::FunctionWrapper::operator()()
{
  pImpl_->invoke();
}
